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Digital display instrument
Intelligent flow totalizer

● Scope of application

DX-908 intelligent flow totalizer is used with various flow sensors or transmitters, temperature sensors or transmitters and pressure transmitters. The intelligent flow totalizer can be used for various liquids, steams, natural gas, general gases, etc. The flow parameters are measured and displayed, accumulated calculation, alarm control, transmission output, data acquisition and communication.

● Features

Intelligent flow totalizer full range automatic temperature and pressure compensation calculation. The compensation method can be set arbitrarily. Linear integration, square root can be arbitrarily set. Instantaneous flow, accumulated flow, temperature, pressure and other parameters are displayed. 0-5% optional
The accumulated flow value of the intelligent flow totalizer can be cleared by the panel keys. The zeroing operation can lock the power-off protection function. The accumulated flow value is maintained for more than 5 years after power failure. All set values are permanently retained after power failure.
The advanced modular structure of the intelligent flow totalizer , combined with the powerful instrument chip, the function combination and system upgrade are very convenient

● Main technical indicators

Basic error: 0.5% FS or 0.2% FS ± 1 word Resolution: 1/20000, 14-bit A / D converter Display mode: dual-row display at the same time, four-digit digital tube on the upper row display instantaneous flow, eight-digit on the lower row Digital tube display cumulative flow sampling cycle: 0.5S
Alarm output: instantaneous flow two limit alarm, relay output contact capacity AC220V / 3A
Transmission output: 4 ~ 20mA, 0 ~ 10mA, 1 ~ 5V, 0 ~ 5V Accuracy: ± 0.3% FS
Communication output: interface mode-isolated serial two-way communication interface RS485 / RS422 / RS232 / Modem
Baud rate: 300 ~ 9600bps internal free setting feed output: DC24V / 50mA
Power supply: switching power supply 85 ~ 265VAC, power consumption below 4W

● Model description

Type spectrum Explain
DX-908 Intelligent flow totalizer
Dimensions A 160 × 80 × 125mm
A / S Vertical 80 × 160 × 125mm
B 96 × 96 × 110mm
Control output B0 B0 no alarm output, can be omitted
B1 Instantaneous flow limit alarm
B2 Instantaneous flow lower limit alarm
B3 Instantaneous flow upper and lower limit alarm
B4 Cumulative flow limit alarm
B5 Cumulative flow lower limit alarm
B6 Cumulative flow upper and lower limit alarm
Transmit output X1 4-20mA output
X2 0-10mA output
X3 1-5V output
X4 0-5V output
Communication output P Micro printer
R Serial communication RS232
S Serial communication RS485
Transmitter power supply No feed output
V12 With DC12V feed output
V24 With DC24V feed output
Power supply 220VAC power supply
W DC24V power supply
Flow input signal L1 Current: 4-20mA, 0-10mA, 0-20 mA
L2 Voltage: 1-5V, 0-5V
L3 Pulse frequency: 0-10KHZ
Temperature input signal W1 Current: 4-20mA, 0-10mA, 0-20mA
W2 Voltage: 1-5V, 0-5V
W3 Thermal resistance: Pt100
W4 Thermocouple: K, T, E
Pressure input signal Y1 Current: 4-20mA, 0-10mA, 0-20mA
Y2 Voltage: 1-5V, 0-5V

Model example: DX-908AB3X1SV24L1W1Y1
DX-908 series intelligent flow totalizer , external dimensions 160 × 80 × 125mm, instantaneous flow upper and lower limit alarm control output, 4-20mA instantaneous flow signal input, 4-20mA pressure signal input, 4-20mA temperature signal input, 4 ~ 20mA instantaneous flow transmission output, with RS485 isolated communication interface, with DC24V feed output, power supply 220VAC